Fluid pressure actuated pressing machine



Jan. 8, 1935. J. P. DALY FLUID PRESSURE ACTUATED PRESSING MACHINE Filed Feb. 13, 1929 3 Sheets-Sheet 1 BY fda/ff y ATTORNEYS.y

Jgn. 8, 1935. J. P. DALY FLUID PRESSURE ACTUATED PRESSING MACHINE Filed Feb. 15, 1929 3 Sheets-Sheet '2 INI/ENTOR.

BY l 5 .,-1TT0RNEYS Jan. 8, 1935. J. P. DALY 1,987,339

FLUID PRESSURE ACTUATED PRESSING MACHINE Filed Feb. 15, 1929 5 sheets-sheet s INVENTUR.

@uw j ATTORNEYS Patented Jan. 8, 1935 v' UNITED STATES PATENT OFFICE PRESSURE ACTUATED PRESSING MACHINE Joseph l?. Daly Cincinnati, Ohio, assignor to The Daly Manufacturing Company, Cincinnati, Ohio, a corporation of Ohio Application February 13, 1929, SerialNo. 339,673

v 1s claims. (ci. cfs-9') My invention relates to garment or ironing hands on the `two-hand control means 51-51 pressing machines operated by' a fluid pressure while the press is closing, thus insuring safety motor such as al pneumatically operated piston to the operator. or pistons within one or more cylinders. The above and other objects to which reference 5 Infiuid pressure actuated presses-such as clothwill bemade in the ensuing disclosure I accom- 5 ing presses and laundry presses', such high prespl-ish by the combination and arrangement of sure` isattained that there is a constant-*problem part of which I have shown a preferred modicato eliminate the chance that the operatorA or tion.

someone else Working in the establishment where Referring to the drawings:

the pressi is being used vwill have some part of j Figure 1 is a side elevation of an example-of `10 his body pinched between the press jaws or head 'the invention, with parts shown in section and and buck. It has been proposed-to employ a.` duel with certain center lines shown to indicate the control for a pneumatically4 i operated motor relative positions ofthe parts during their cycles means, which control requires the use of both of movement.

hands for closing' the press, thereby obviating the Figure 2 is an enlarged diagrammatic View, with 15 possibility that' the. operator will carelessly allow parts shown in section, of the fluid pressure motor hsliandsY to be pinched between the press jaws, and its two-hand control system detached from but I nd this safety feature does not entirely a press. l eliminate the dangerof' some other Workman FigureB is a diagrammatic side elevation of th carelessly allowing part of his body to be caught 'compound toggle link actuating mechanism 20 during the: closing of the press. open position, with certain center lines indicating f It is the object of my invention to providera :the relatve position of the parts during their system of levers which will be rendered nopermovement..

able and; thus. cannot; effect final. jaw compres- Figure 4 is a diagrammatic Side elevation Of sioniisomeroreign matter, other than thearticres the compound toggle link mechanism in Closed 25 mbpressed, should prevent thepress from closposition which it acts as a pressure link or ing. Thus, if the operator of the press is pro'- l'ever, certain center lines being also indicated eeeding with a pressing operation and somevuntov indicate the relative movement of the parts n authorized person allows himself to be :caught from that which they occupy in Figure 3.

between the pressing members, the lever and The pressing machine consists of a base 1 30 power transmission means will be rendered infrom which upright supports 2 extend, on which operable. 1 the pressure table 3 is mounted. The pressure Another' object is the incorporation in the lever vtable-i3 carries the buck 4 which, as indicated, system of a compound toggle linkY system, the is mounted on an upright support 5. In anv upmovement of: the links of which are accelerated right frame member 6- a press lever 9 is piv- 35 from open to closing position in'which position otallymounted as indicated at 7 and carries' a the links act as a. pressure lever. Afurther obhead T8 which is moved down into pressing eniect is the provision of mechanism in which the -gagement with the buck, and includes a rear- -leVel frmed by the tggle links transmits the wardly extending portion 9 through which pow- 40 power tor the compression stroke ofthe press. Ver is transmitted to perform the pressing op- 40 I have asl a further object the provision of a eration. Changes in the relative size and relalocking device which will permit the release of ltion of the parts of the mechanism heretofore th ud Pressure lOm themO'GOT While the jaw described may be made without departing from pressure is still on the work to be ironedr and the principle of my invention, as I have merewhich preferably travels through a radius corre- 1y mustrated' what might be Called a, Standard 45 vspending to the radius of travel of the parts type of clothing or laundry press, which I have actuated by the fluid pressure motor. It is also selected because my fluid pressure Vactuating .an object to provide a lockingdevice for holding mechanism and the controls therefor are adaptthe pressing jaw members together which acts as ed for use with this type 0f P1SS- a stop tov prevent overrunning ofthe actuating Referring now to Figure 2, it is my purpose 50 mechanism, which would lock'the mechanism so to provide -a moto-r such as is indicated in sec- -that the springs or counter-weights will not open tional view. 'I'he motor is composed of a cylinthe press'. der member having two cylindrical shells, an

Afurther object is to produce a novel two-hand upper shell or4 cylinder 10 and a lower shell or control press wherein the. operator holds bothr cylinder l1, joined together by a casing or sleeve 11a in which the intake and outlet ports for the cylinders are provided. The upper cylinder has a cap 12 through which extends a piston or connecting rod 13 connected with the upper piston 14. The end of the piston rod is provided with some suitable mounting device such as the eye 15 which is attached to a boss 16 formed on the machine frame. Other devices which'will also permit restricted pivotal movement of the pneumatic cylinder may also be provided.

The lower cylinder has a cap 17 through which the piston rod 18 extends, the piston rod being connected to the piston 19. The piston rod has a boss 20 on its end which is pivotally con- The4 nected to an arm 2l of a bell crank lever. bell crank lever is journaled on a shaft 22 mounted in the machine frame. the bell crank extends upwardly and has a pair of toggle links connected thereto. The lower toggle link 24 is pivotally connected to the arm 23as indicated at 25. The knuckle of the toggle links is indicated at 26 and the upper toggle link 27 has preferably an adjustment wheel 28 which, through a right and left hand threaded bolt, extends from aboss 29 which is pivotally connected to the end of the arm 9.

The toggle links are provided with stops such as the aligned fiat surfaced portions 30,. 31 at the knuckle which form a straight link or lever from the vtoggles when they are moved to a position beyond the center. Flattened surfaces 32, 33 are also formed to act as stops for the connection between the lower toggle and theshort arm of the bell crank.

In order to exert a spring pressure on the knuckle to accelerate the straightening ofthe toggles when the long arm of the bell crank is depressed, I have provided a connection, preferably resilient, which, in the modification illustrated, comprises a bell crank having a long arm 34 with a spring 35 which connects with the lower toggle just below the knuckle, and a short arm 36 which may also be connected with the long arm of the bellcrank as by a spring ?,7. Preferably the spring 37 will be Vstronger than the spring so that the initial downward movement of the long arm of the bell crank immediately accelerates the closing of the toggles.

It Will'also be noted that the mechanism, represented by the springs 35 and 37 and the bell kcrank 34, 36, comprises means which tend to keep the toggle links 23 and 24 in bent position or inoperative until the toggle links 424 and 27 have reached straightened position with the stops 30, V31 engaging each other. i When-fthe, links 24 and 27 Vare prevented from further pivotal movement upon the pivot 26, thelinks-23and 24 begin to straighten for final heavy pressure. There is then a double toggle action in that during the initial closing movement of the press, the toggle is represented byv a long power link including links 23 and 24 as one link and'link 27 as the other link.` This is a fast closing press toggle. In the iinal closing action, the/toggle becomes a short high power link 23 and e. long link including links 24 and 27 actingas a unit.

I may further. provide means for causing the press to open -upwhen the locking control is relieved which may be in the form of a spring 38 connecting the machine frame and the long .arm of the bell crank.

The manual controls for the movement of the pressure motor is preferably in the form of a two button control with the buttons Isuiciently far The short arm 23 ofi! apart as to require the use of both hands to operate them. Thus I have shown the button control at the right in Figure 2 composed of a casing 39 within which is a rocker arm 40 pulled up into the position indicated by a spring 41. The rocker actuates the valve mechanism for opening and closing the port for admitting compressed fluid to the upper cylinder and for exhausting the same. The valve mechanism consists of a cylindrical valve casing 42 having an inlet port 43 supplied with compressed fluid from the supply pipe 43a. The port 44 intermediate the ends of the valve cylinder 42 admits compressed fluid to the pipe 45 leading to the port in the uppermotor cylinder. The exhaust port in the valve cylinder is indicated at 46. Valve heads 47 and48 mounted on a stem 49 with the elevation of thev rocker admit air to the port 44 and pipe 45 and close the exhaust port 46. A spring 50 bearing against the valve disc 47 causes the admission port to be closed and theexhaust opened ,when the operator removes his finger or' hand fromthe pushv button 5l which engages the-raised end of the rocker 40. v l 1- The control for the lower cylinder 11 is exactly the same as that for the. upper, similar numbers `being applied to the parts for the control valves for the lower cylinder.

In'order to economize in the time required -to exhaust the air or compressedfluid from the mo- ,tor cylinders, I have provideda lockingdevice Which the operator may actuate by 2L control either from .the machine in use or from one arranged next to it. -Compressed fluid is supplied to a cylinder. 52'from the supply pipe 43a through `a pipe-` 53.",` Within the cylinder,.,52 there is a piston 54 and its rod 60 which extends through the end 56 of the cylinder. A valve 57 controls Vthe passage` of compressed fluid from thesupply line 53 to the cylinder 52. lA link 58 is c onnected to an arm 59 which controls the valve. 1Thelpiston rod 60 has its outer end anchored to a yhub 55 integral with a fork 61 which has a pivotal connection .with a rocker .-lever 62 which is connected .to-,the link 58.' 'I'he rockerhas an enlarged boss 63 through which a pivotpin is exten-ded connectingit to an arm 64 pivotedl on the same shaftA 22 astheffbell crank lever, so that the locking. slot 65 on the rocker 62l will move through theY same `arc as the l.pin 66 carried by the long arml 21- of the bell crank.

When both spaced manual controls 51 forthe two motor means 10 and 11 are operated the pisvtons 14 and'19 will travel on their out strokes forcingv the vpin 66 to interlock with the slot 65 .and pull out'on the piston. This same movement compression andwhere its contact with thei end of the cylinder prevents the mechanical-parts fromover-running; I

- To release the locking control an enlarged` port v,and a pipe'67 extend to an exhaust valve68 having a spring pressed valve head 69 whichmay be opened bymeans of the handle 70` )The release valve 68 for the locking control may thus be located in anydesired point of remote control so that an operator may leave the machine after releasing'both manual controls 51 for the pressure motor and then busy himself at another machine, and then, before returning to the original machine, the release button for the originalv machine maybe operated sof that, by the time hereturns', the press will be opened. up.. Thus some economy of time is made possible.

The two cylinders 10` and 11. are placedA end to end or in axial alignment with the upper piston rod 13 pivoted on the press frame and they lower piston rod pivotally connected to any suitable lever means 21 adapted to actuate the upperl press jaw or head 8 up and down in relation to the buck 4, Hence the double cylinder means 10,--11 is suspended between the press frame and head operating leverage orl means: 21-9 so. that the cylinder means floats or is mobile on its two pistons 14 and 19'.V

An air pressure line ir and manually operable valve contnol means. 5l is providedv for each separate cylinder and l1 which necessitates the use of both hands of the operator who must depress both buttons to send a i'ow of air from the 'pressure supply line 43a through both feed lines 45 to the two cylinders l0 and 11 to drive both cylinders downwardly along both pistons 14 and 19 and to force the lower piston 19' outwardly from the cylinder l1.. Motive fluid or air pressure transmitted to one cylinder alone will not fully close the press head inasmuch as. the length of the stroke of only one cylinder 10` or 1l is insufflcient to close the press head and produce pressure. The total length of the piston or cylinder strokes is suincient to fully close the head onto the buck and yproduce jaw compression.

While I have disclosed only a preferred modiii'cation oi my invention, it will be readily appar'- ent that changes inthe mechanical construction may be made Without departing from the inventive principle involved.

Having. thus described my invention, what I claim as new and desire to secure by Letters Patent, is.:-

l. In :combination with a pressing machine having a relatively Xed pressing member and a pressing member movable into pressing `erigagementwith the fixed member, a iluid pressure motor having mechanical connections with the movable member for moving the pressing member into pressing engagement with the xed member comprising a cylinder, subdivided intermediate its ends into plural cylinders, apiston in each of said cylinders, and controls, one for each of said cylinders, for compressed fluid introduced into each of said subdivided cylinders, said controls being spaced apart so as to require the use of both the hands of an operator to manipulate same.

2. In combination with a pressing machine having a frame and relatively ixed pressing member and a pressing member movable into pressing engagement with the Xed member, a duid pressure motor for moving the movable pressing member into pressing engagement with the ixed member comprising a cylinder subdivided intermediate its ends into plural cylinders, a piston in each cylinder, a rod for each piston and controls one for each cylinder for admitting compressed fluid into each of said subdivided cylinders, said controls being spaced apart so as to require the use of both the hands of an operator to manipulate same, operating connections between one piston rod and the movable pressing member, and the other piston rod being attached to the press frame.

3. In combination with a pressing machine having a relatively fixed pressing member and a pressing member movable into pressing engagement with the Xed member, a iiuid pressure motor means for moving the. movable pressing member into pressing engagement with the xed member comprising a; cylinder subdivided intermediate its ends into plural cylinders, a piston and connecting rod in each of said cylinders, and spaced two-hand controls one for each cylinder for admitting compressed fluid into each of said subdivided cylinders so as to require the `use cf both the' hands of anv operator to manipulate same, mechanism connecting one of said pistons and the movable presser member, and means for locking said mechanism in pressingposition..

4. In combination with al pressing machine havinga relatively xed pressing member and a pressing member movable into pressing' engagement with the fixed member, a. ilu-id pressure motor for moving the movable pressing'member into pressing engagement. with the. xed member comprising a. cylinder subdivided intermediate its ends: into pluralcylinders, multiple pistons in said cylinders, and spaced two-hand controls one for each cylinder for" admitting compressed fluid into each of said cylinders so as to require the use of both the hands of an operator to manipulate same, mechanism connecting one of said pistons to the movable pressing member, and fluid pressure controlledmeans. for locking said mechanism in pressingy position.

5. In combination with a pressing machine having a relatively xed pressing member and a pressing member movable intopressing engagement with the fixed member, a fluid pressure motor for' moving the members; into pressing engagement, and mechanism connecting said Huid pressure motor and' said movable. member comprising a bell crank and toggle links, the end of one of which. is connected with saidl movable member, and the end of the other of which is connected with an arm of said bell crank, said toggle links being equipped with stops to limit their movement when straightened out, and means connecting the knuckle of said toggle links and said bell cran-k whereby the movement ci the: bell crank will accelerate the closing of said toggle links.

6. In combination with a pressing machine having a relatively fixed pressing member and a pressing member` movable into'pressing engage- -rnent withv the fixed member, a fluid pressure motorincluding twocylinders and a manual controlifor each cylinder for moving the members into pressing engagement, andmechanism connecting said fluid' pressure motor and vsaid movable member comprising a bell crank and toggle links, the end of' one of which is connected with said movable member, and the end of the other of which isv connected with an arm of said bell crank, and' means interconnected between the motor means and toggles for accelerating the closing of said toggles.

7. In a pressing machine having a relatively fixed buck and` having a presser headv movable into pressing.y engagement. with said buck, a fluid pressure motor including two cylinders and a manual control -for each cylinder, and mechanical connections between said motor and presser head, said mechanical connections comprising toggle links constructed and arranged to assume a straightened position for transmitting a power stroke only when the presser head is substantially closed on said buck, said mechanical connections including a bell crank to which said toggle links are'connected, and means for ac- CII celerating the closing of said toggle links comprising resilient means interconnected between the bell crank and toggle and tensioned with the movement of said bell crank.

8. A pressing machine having a movable head and a buck and a double cylindered, double pistoned iluid pressure motor for actuating same, plural controls one for each of said pistons of said motor, and a mechanical safety device for preventing the operation of said press when said head is blocked from free movementtoward said buck.

9. A garment or ironing press comprising a frame and coacting press jaws, fluid pressure motor cylinders disposed in axial alignment, a piston and connecting rod in one cylinder and operatively connected With one press jaw, a piston and connecting rod in another cylinder and attached to the press frame, the cylinders being operatively connected together whereby one motor cylinder and piston is moved bodily, an independent iluid pressure line having a manual control valve connected to each cylinder to admit pressure thereinto against .each piston, and the control valves being spaced apart to provide a safety multiple hand control means for the motor cylinders. e

10. A garment or ironing press comprising a frame and coacting press jaws, fluid pressure motor cylinders disposed in axial alignment, a A

piston and connecting rod in one cylinder and operatively connected with one press jaw, a piston and connecting rod in another cylinder, and attached to the press frame, the cylinders being joined together and movably mounted between the press frame and the press jaw and hence adapted to reciprocate in relation to the pistons, an independent fluid pressure line having a manual control valve connected to each cylinder to admit pressure thereinto against each piston, and the control valves being spaced apart to provide a safety multiple hand control means for the motor cylinders.

11. A pressing machine comprising a frame and coacting press jaws, va pair of pistons and piston rods, the outer end of one piston rod being attached to frame and the outer end of the other piston rod being operatively connected with one of the press jaws, a cylinder mounted on each piston and free to reciprocate in relation to the piston rods fixed to the frame, a flexible pressure `feed line including a manually controlled valve in communication with each cylinder, the valves being spaced apart on the press to provide a twohand control, and the two cylinders being connected together so that the piston rod, which is operatively connected with the press jaw, and its piston and cylinder are moved bodily.

12. A pressing machine comprising coacting press jaws, motor means, operating connections interconnected between the motor and a press jaw including an arm pivoted on a frame pivot, a locking device motor means, and a locking device actuated by the motor means and engaging the arm to grip and hold the first named motor means in operated position to hold the press closed.

13. In combination in an ironing machine, an ironing buck, an ironing head, a cylinder structure having a primary chamber and a secondary chamber, a piston in said primary chamber connected with said ironing head, a piston in said secondary chamber anchored to a rigid support, conduit means for fluid under pressure, a valve for controlling the flow of fluid from said conduit means to said primary cylinder chamber to cause movement of the piston therein and primary movement of the head relative to the buck, and a second valve for controlling the llow of fluid from said conduit means into said secondary chamber whereby said cylinder structure will be bodily moved relative to said anchored piston to cause final movement of said head relative to said buck.

14. In a pressing machine having a relatively fixed buck and a presser head movable into pressing engagement with said buck, a fluid pressure motor, and mechanical connections between said motor and said presser head including a three link toggle means having a toggle knee at the connection between each link, a stop means at each toggle knee, and means resiliently retaining the first two toggle links against relative pivotal movement with the stop means in engagement during the initial closing of the press and permitting relative movement during the final closing of the press.

15. A press comprising a head and operating mechanism including a compound toggle having three links pivoted end to end and means for constraining the toggle to break about one of said pivots for a portion of the movement of the head and about another of its pivots for the remainder of its movement.

16. A garment or ironing press comprising a press frame, cooperating press jaws including a buck and a head, a pivoted press lever carrying the head, a compound toggle connected to the press lever including an upper link, a middle link and a lower link which links are pivoted together end to end, the lower link being pivoted in the frame, said compound toggle comprising an upper toggle having the upper link as a short work arm and the middle and lower links combined as a long operating arm and a lower toggle having the upper and middle links as a long work arm and the lower link as a short operating arm; resilient means Vto retain the lower togglejnoperative while the upper toggle is closing, means to lock the upper toggle in dead center position, and means to actuate the toggles.

17. A garment or ironing press comprising a lpress frame, cooperating press jaws including a buck and a head, a pivoted press lever carrying the head, a compound toggle connected to the press lever including an upper link pivoted at one end to the press lever and at the other end to the end of a middle link, a middle link, and a lower link pivoted in the frame and having its end pivoted to the lower end of the middle link, said compound toggle comprising an upper toggle formed by the upper link as a short work arm and the middle and lower links together as a long operating arm and a lower toggle formed by the upper and middle links as a long work arm and the lower link as a short operating arm, locking means to retain the upper toggle in dead center position, stop means to prevent the lower toggle from opening more than a predetermined extent, spring means retaining the lower and middle links in open position against the stop means, and actuating means to swing the lower link to close the compound toggle and operate the head.

18. A garment or ironing press comprising a press frame, cooperating press jaws including a buck and a head, a pivoted press lever carrying the head, a compound toggle connected to the press lever including an upper link pivoted at `one end to the press lever and at the other end to the end of a middle link, a middle link, and a lower link pivoted in the frame and having its end pivoted to the lower end of the middle link, said compound toggle Comprising an upper toggle formed by the upper link as a short work arm and the middle and lower links together as a long operating arm and a lower toggle formed by the upper and middle links as a long work arm and the lower link as a short operating arm, looking means to retain the upper toggle in dead center position, stop means to prevent the lower toggle from opening more than a predetermined extent, spring means attached at one end to the middle link to normally retain the .middle and lower links in open position, and actuating means to swing the lower link to close the compound toggle and operate the head.

JOSEPH P. DALY. 

